According to the attraction–similarity model, relationship quality leads to perceptions of partner–self similarity. Relationship quality and perceived similarity then provide psychological benefits for the perceiver. Across 3 studies, relationship quality positively predicted perceptions of similarity. Study 1 indicated that for moderate, but not low, relationship-relevant traits, individuals projected the self onto the dating partner as a way of perceiving similarities. In Study 2, priming high, as opposed to low, relationship quality led to greater perceived similarity on the moderately relevant traits. Study 3 indicated greater perceived similarity between self and dating partner than between self and average same-gender student on the moderately relevant traits. Relationship quality and perceived similarity with the dating partner on the moderately relevant traits also predicted psychological benefits.